Nigeria's national power grid collapsed on Wednesday after a generator tripped, triggering a cascade of failures across the system, the state-backed Independent System Operator (NISO) said.

Nigeria's power grid suffers outage, restoration underway, operator says

Nigeria's national power grid collapsed on Wednesday after a generator tripped, triggering a cascade of failures across the system, the state-backed Independent System Operator (NISO) said.

The outage occurred at 1020 GMT and caused a huge drop in load, NISO said in a statement.

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